Display panel

Abstract

A display panel comprises an array substrate, a frame glue layer and an optical substrate. The frame glue layer is arranged on the array substrate and located in the first frame area. The optical substrate is arranged on the frame glue layer and comprises a solar energy conversion layer, an electrode conducting layer, a graphical organic layer and an upper electrode layer. The electrode conducting layer is arranged on the solar energy conversion layer and is electrically connected with the solar energy conversion layer and the frame glue layer. The patterned organic layer is disposed on the electrode conductive layer to expose a part of the electrode conductive layer. And the upper electrode layer is arranged on the graphical organic layer, is positioned between the graphical organic layer and the frame adhesive layer, and is electrically connected with the electrode conductive layer exposed by the graphical organic layer and the frame adhesive layer. Through the arrangement of the graphical organic layer, the frame glue layer of the display panel is not influenced by the structure of the solar cell unit and has the same thickness and height, so that the display area of the display panel has a uniform display effect.

Description

Technical Field

[0001] This application relates to a display device, and more particularly to a display panel capable of photoelectric conversion via an optical substrate. Background Technology

[0002] To meet the needs of daily life and work, carrying electronic products with display panels has become a social trend. As these products operate for extended periods, their power consumption increases. Besides using portable power banks to replenish their power, charging electronic products via solar energy is also an emerging charging method.

[0003] To effectively utilize solar energy and achieve a thinner display panel, a display panel combining an optical substrate (e.g., a color filter substrate) with a solar cell has been proposed. By integrating the solar cell into the optical substrate, the number of glass substrates in the display panel is effectively reduced, thus significantly reducing the overall thickness of the display panel.

[0004] Generally, to accommodate the structure of solar cells and prevent unintended electrical connections that could lead to cell failure, the optical substrate located in the top and bottom bezel areas of a display panel is insulated with an insulating layer to isolate the frame adhesive elements in these areas from the solar cells. However, this results in a larger gap between the left and right bezel areas than between the top and bottom bezel areas, leading to uneven display quality in existing display panels. Therefore, developing a display device that can solve this uneven display quality problem is one of the issues that this field aims to address. Utility Model Content

[0005] One of the objectives of this application is to provide a display panel in which, by setting a patterned organic layer, the frame adhesive layer of the display panel has the same thickness and height regardless of the influence of the solar cell structure, so that the display area of ​​the display panel has a uniform display effect.

[0006] To achieve one of the aforementioned objectives, this application provides a display panel having a display area and a border area surrounding the display area. The border area includes a plurality of first border areas and a plurality of second border areas. The plurality of second border areas extend along a first axial direction, and the plurality of first border areas extend along a second axial direction, the first axial direction being perpendicular to the second axial direction. The display panel includes an array substrate, a frame adhesive layer, and an optical substrate. The frame adhesive layer is disposed on the array substrate and located in the plurality of first border areas, and is electrically connected to the array substrate. The optical substrate is disposed on the frame adhesive layer, electrically connected to the frame adhesive layer, and includes a solar energy conversion layer, an electrode conductive layer, a patterned organic layer, and an upper electrode layer. The electrode conductive layer is disposed on the solar energy conversion layer and electrically connected to the solar energy conversion layer and the frame adhesive layer. The patterned organic layer is disposed on the electrode conductive layer, exposing a portion of the electrode conductive layer. The upper electrode layer is disposed on the patterned organic layer, located between the patterned organic layer and the frame adhesive layer, and electrically connected to the exposed portion of the electrode conductive layer and the frame adhesive layer.

[0007] Based on the above, the display panel of this application embodiment, by setting a patterned organic layer, allows the frame adhesive layer of the display panel to have the same thickness and height regardless of the solar cell structure, and maintains the electrical connection between the electrode conductive layer, the frame adhesive layer and the array substrate, so that the solar cell can operate normally and the display area of ​​the display panel has a uniform display effect. Attached Figure Description

[0008] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0009] Figure 1 This is a top view of the display panel according to an embodiment of this application;

[0010] Figure 2 According to the embodiments of this application Figure 1 A schematic diagram of an embodiment of the AA' section line;

[0011] Figure 3 According to the embodiments of this application Figure 1 A schematic diagram of an embodiment of the BB' cross-section line;

[0012] Figure 4 This is a schematic diagram of a patterned unit of a graphic organic layer per unit area according to an embodiment of this application;

[0013] Figure 5This is a schematic diagram of a second embodiment of a patterned organic layer per unit area according to an embodiment of this application;

[0014] Figure 6 This is a schematic diagram of a patterned unit of a graphic organic layer per unit area according to an embodiment of this application. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] Please refer to Figure 1 , Figure 2 and Figure 3 . Figure 1 This is a top view of the display panel 1 according to an embodiment of this application. Figure 2 for Figure 1 A schematic diagram of an embodiment of the AA' section line. Figure 3 for Figure 1 A schematic diagram of an embodiment of the BB' cross-section. The display panel 1 can define a display area 100 and a border area 200 surrounding the display area. The display area 100 is used to display the display screen. The border area 200 includes a plurality of first border areas 210 and a plurality of second border areas 220. The second border areas 220 extend along a first axis X. The first border areas 210 extend along a second axis Y. The first axis X is perpendicular to the second axis Y. The border area 200 is used to house multiple solar cell units and serve as a wiring area for electronic components.

[0017] Please refer to this first. Figure 2The display panel 1 includes an array substrate 10, a frame adhesive layer 20, a display dielectric layer 30, and an optical substrate 40. The array substrate 10, frame adhesive layer 20, display dielectric layer 30, and optical substrate 40 are stacked on top of each other along a third axis Z. The third axis Z is perpendicular to the first axis X and the second axis Y. The array substrate 10 includes a substrate 11, an insulating layer 13, conductive layers 12 and 14, and a lower electrode layer 15. The substrate 11 is, for example, a glass substrate. The conductive layer 12 is disposed on the substrate 11 and is used for electrical connection to external circuits through wiring, and for electrical connection to electronic components in the array substrate 10. For example, the conductive layer 12 is electrically connected to a flexible printed circuit board (FPC) to provide gate drive signals from the FPC to the corresponding array transistors. The conductive layer 12 is, for example, a metal thin film layer. The conductive layer 14 is disposed on the insulating layer 13 and is used for electrical connection to external circuits through wiring, and for electrical connection to electronic components in the array substrate 10. For example, conductive layer 14 is electrically connected to a flexible printed circuit board (FPC) to provide source drive signals from the FPC to corresponding array transistors. Conductive layer 14 is, for example, a thin metal film layer. Insulating layer 13 is disposed on conductive layers 12 and 14, and at least partially covers conductive layers 12 and 14, to isolate conductive layers 12 and 14 from other electrical materials and prevent unintended electrical connection paths. Insulating layer 13 also exposes conductive layer 14 located in the second border region 220. Lower electrode layer 15 is disposed on the conductive layer 14 exposed by insulating layer 13 and is electrically connected to conductive layer 14. Lower electrode layer 15 is located in the second border region 220. Lower electrode layer 15 is, for example, a transparent conductive film.

[0018] In this embodiment, a sealant layer 20 is disposed on the array substrate 10 and located in the second border region 220. The sealant layer 20 is electrically connected to the lower electrode layer 15 of the array substrate 10. The sealant layer 20 is implemented, for example, by a sealant including conductive balls 21. The sealant layer 20 has a height H2 and a width W2. The height H2 of the sealant layer 20 is determined by the particle size of at least one conductive ball 21. Thereby, the sealant layer 20 can establish an electrical connection with the array substrate 10 through the conductive balls 21. A display medium layer 30 is disposed on the array substrate 10 and surrounded by the sealant layer 20. The display medium layer 30 may include components such as a display medium (e.g., liquid crystal), pixel electrodes, and a reflective layer, and this application is not limited thereto.

[0019] The optical substrate 40 includes a solar energy conversion layer 41, an electrode conductive layer 42, and a first organic layer 43. The solar energy conversion layer 41 includes a positive electrode layer 411, a photoelectric conversion material layer 412, and a negative electrode layer 413, sequentially stacked. The positive electrode layer 411 is, for example, a transparent conductive layer. The negative electrode layer 413 is, for example, a metal thin film layer. The photoelectric conversion material layer 412 is, for example, a silicon-based semiconductor material layer. The stacked positive electrode layer 411, photoelectric conversion material layer 412, and negative electrode layer 413 define a solar cell unit. The solar energy conversion layer 41 is disposed in the second border area 220 of the display panel 1. The solar energy conversion layer 41 is not disposed in the display area 100 of the display panel 1. The electrode conductive layer 42 is disposed on the solar energy conversion layer 41 and electrically connected to the solar energy conversion layer 41. The electrode conductive layer 42 is disposed in the second border area 220 of the display panel 1, but not in the display area 100 of the display panel 1. In this embodiment, the conductive electrode layer 42 is electrically connected to the positive electrode layer 411 of the solar energy conversion layer 41. The conductive electrode layer 42 is, for example, a metal thin film layer. A first organic layer 43 is disposed on and covers the conductive electrode layer 42. In this embodiment, the first organic layer 43 located in the second frame region 220 does not expose the conductive electrode layer 42. The vertical projection of the first organic layer 43 on the array substrate 10 overlaps with the vertical projection of the adhesive layer 20 on the array substrate 10. The optical substrate 40 further includes a second organic layer 44. The second organic layer 44 is disposed between the solar energy conversion layer 41 and the conductive electrode layer 42. The second organic layer 44 located in the second frame region 220 exposes a portion of the positive electrode layer 411. The conductive electrode layer 42 is connected to the exposed positive electrode layer 411. In this embodiment, the optical substrate 40 further includes an upper electrode layer 45, which is disposed on the first organic layer 43. The upper electrode layer 45 is, for example, a transparent conductive layer. The upper electrode layer 45 located in the second frame region 220 is in contact with the frame adhesive layer 20. In this way, the frame adhesive layer 20 can establish an electrical connection with the electronic components of the optical substrate 40 through the upper electrode layer 45.

[0020] Please refer to Figure 3In this embodiment, the first frame area 210 further includes a photoelectric conversion area 211 and a frame adhesive area 212. In this embodiment, the solar energy conversion layer 41 is disposed on the first frame area 210 of the display panel 1. The solar energy conversion layer 41 is not disposed on the display area 100 of the display panel 1. The positive electrode layer 411, the photoelectric conversion material layer 412, and the negative electrode layer 413 located in the photoelectric conversion area 211 can define a solar cell unit. In this embodiment, the electrode conductive layer 42 is disposed on the first frame area 210 of the display panel 1, and the electrode conductive layer 42 is not disposed on the display area 100 of the display panel 1. In this embodiment, the electrode conductive layer 42 is electrically connected to the positive electrode layer 411 or the negative electrode layer 413 of the solar energy conversion layer 41. The electrode conductive layer 42 includes an electrode conductive layer 42a and an electrode conductive layer 42b. The electrode conductive layer 42a is electrically connected to the positive electrode layer 411 of the solar energy conversion layer 41 located in the photoelectric conversion area 211. The conductive electrode layer 42a is connected to the negative electrode layer 413 located in the adhesive region 212 (212a). In this embodiment, the negative electrode layer 413 located in the adhesive region 212a is used as a conductive layer; therefore, the electrical properties of the negative electrode layer 413 located in the adhesive region 212a are the same as those of the conductive electrode layer 42a. The conductive electrode layer 42b is electrically connected to the negative electrode layer 413 of the solar energy conversion layer 41 located in the photoelectric conversion region 211. The conductive electrode layer 42b is also connected to the negative electrode layer 413 located in the adhesive region 212 (212b). In this embodiment, the negative electrode layer 413 located in the adhesive region 212b is used as a conductive layer; therefore, the electrical properties of the negative electrode layer 413 located in the adhesive region 212b are the same as those of the conductive electrode layer 42b.

[0021] In this embodiment, the first organic layer 43 is disposed on the electrode conductive layer 42 and only partially covers the electrode conductive layer 42. In this embodiment, the first organic layer 43 located in the adhesive region 212 exposes the electrode conductive layer 42. The vertical projection of the first organic layer 43 on the array substrate 10 does not overlap with the vertical projection of the adhesive layer 20 on the array substrate 10. The optical substrate 40 further includes a patterned organic layer 46. The patterned organic layer 46 is disposed on the electrode conductive layer 42 exposed by the first organic layer 43 and is located between the adhesive layer 20 and the electrode conductive layer 42. The patterned organic layer 46 is disposed only in the adhesive region 212. The patterned organic layer 46 exposes a portion of the electrode conductive layer 42. The patterned organic layer 46 and the first organic layer 43 are formed on the electrode conductive layer 42 using the same process.

[0022] The optical substrate 40 further includes a second organic layer 44. The second organic layer 44 is disposed between the solar energy conversion layer 41 and the electrode conductive layer 42. The second organic layer 44 located in the first frame region 210 exposes a portion of the positive electrode layer 411 and the negative electrode layer 413. Here, the electrode conductive layer 42 can be electrically connected to the positive electrode layer 411 or the negative electrode layer 413 of the solar energy conversion layer 41. In this embodiment, the optical substrate 40 further includes an upper electrode layer 451 and an upper electrode layer 452. The upper electrode layer 451 is disposed on the patterned organic layer 46. The upper electrode layer 452 is disposed on the first organic layer 43. The upper electrode layers 451 and 452 are not electrically connected. The upper electrode layers 451 and 452 have a distance along the first axial direction X. The upper electrode layers 451 and 452 are, for example, transparent conductive layers. The upper electrode layer 451 located in the first frame region 210 is in contact with the frame adhesive layer 20. In this way, the sealant layer 20 can establish an electrical connection with the electrode conductive layers 42 (42a, 42b) through the upper electrode layer 451.

[0023] This application effectively reduces the vertical distance between the lower electrode layer 15 and the upper electrode layer 451 by providing a patterned organic layer 46 in the adhesive area 212 of the first border area 210, which means reducing the cell gap of the adhesive area 212. The adhesive layers 20 located in the first border area 210 and the second border area 220 can therefore have approximately equal heights H1 and H2 and widths W1 and W2. In one embodiment, the adhesive layers 20 located in the first border area 210 and the second border area 220 have equal heights H1 and H2 and widths W1 and W2. That is, the adhesive layer 20 located in the adhesive area 212 of the first border area 210 will not have an increased overall height H1 and a narrower width W1 due to the larger cell gap in the adhesive area 212 compared to the second border area 220. This effectively reduces the occurrence of uneven display in the display area 100. Furthermore, by maintaining the width of the sealant layer 20 in the sealant area 212, the conduction impedance caused by insufficient contact area of ​​the sealant layer 20 can be avoided, thus enabling the solar cell to operate normally.

[0024] Please refer to Figures 4 to 6 , Figures 4 to 6 This is a schematic diagram of an embodiment of a patterned organic layer 46 with a pattern unit 46 per unit area. The patterned organic layer 46 is implemented by at least one pattern unit 461. The pattern unit 461 includes a plurality of patterned units 4611, each patterned unit 4611 being rectangular solid, and the plurality of patterned units 4611 are arranged side by side within a unit area. The patterned unit 4611 has a width WD. The patterned units 4611 have a first distance D1 between them. At least one patterned unit 4611 has a second distance D2 from the edge of the patterned unit 461. In one embodiment, the rectangular solid shape is a square (e.g., Figure 4(As shown). In one embodiment, the solid rectangular shape is a rectangle (e.g., ... Figure 5 (As shown). In one embodiment, the pattern unit 461 of the patterned organic layer 46 includes a patterning unit 4611, which includes a hollow central region 4612. The central region 4612 is, for example, rectangular. The patterning unit 4611 is a rectangular hollow shape (e.g., Figure 6 (As shown).

[0025] In one embodiment, the surface area of ​​the patterned units 461 of the patterned organic layer 46 is between 60% and 80% of a unit area. The surface area of ​​the patterned organic layer 46 may be between 60% and 80% of the surface area of ​​the adhesive layer 20. Please refer to... Figure 4 In one embodiment, when the unit area is 300µm * 300µm (micrometers), the patterned units 4611a are arranged side-by-side, each patterned unit 4611a has a width WD of 80µm, a first distance D1 between the patterned units 4611a is 20µm, and a second distance D2 between the patterned unit 4611a and the edge of the unit area is 10µm. In another embodiment, when the unit area is 600µm * 600µm, the patterned units 4611a are arranged side-by-side, each patterned unit 4611a has a width WD of 160µm, a first distance D1 between the patterned units 4611a is 40µm, and a second distance D2 between at least one patterned unit 4611a and the edge of the unit area is 20µm. The surface area of ​​the patterned units 461 of the patterned organic layer 46 is 64% of this unit area. Please refer to... Figure 5 In one embodiment, when the unit area is 300um * 300um, the patterned units 4611b are arranged side by side, each patterned unit 4611b has a width WD of 80um, a height HD of 280um, a first distance D1 between the patterned units 4611b is 20um, and a second distance D2 between the patterned unit 4611b and the edge of the unit area is 10um. In another embodiment, when the unit area is 600um * 600um, the patterned units 4611b are arranged side by side, each patterned unit 4611b has a width WD of 160um, a height HD of 560um, a first distance D1 between the patterned units 4611b is 40um, and a second distance D2 between at least one patterned unit 4611b and the edge of the unit area is 20um. The surface area of ​​the patterned units 461 of the patterned organic layer 46 is 75% of this unit area. Please refer to... Figure 6In one embodiment, when the unit area is 300um*300um, the width WD1 of the patterned unit 4611 is 90um, the width WD2 of the region 4612 is 100um, and the distance D3 between the patterned unit 4611 and the edge of the unit area is 10um. The surface area of ​​the patterned unit 461 of the patterned organic layer 46 is 76% of this unit area.

[0026] In summary, this application effectively reduces the cell gap in the first bezel area of ​​the display panel by setting a patterned organic layer in the bezel adhesive area. Therefore, the bezel adhesive layers in the first and second bezel areas can have approximately equal height and width. The bezel adhesive layer in the first bezel area does not have an increased overall height or a narrower width due to a larger gap in the second bezel area. This effectively reduces uneven display around the display area. Furthermore, maintaining a uniform width for the bezel adhesive layer avoids insufficient contact area leading to poor conductivity, ensuring normal operation of the solar cell.

[0027] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0028] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms fall within the scope of protection of this application.

Claims

1. A display panel having a display area and a border area surrounding the display area, the border area comprising a plurality of first border areas and a plurality of second border areas, the plurality of second border areas extending along a first axis, and the plurality of first border areas extending along a second axis, the first axis being perpendicular to the second axis, characterized in that, The display panel includes: Array substrate; A frame adhesive layer, disposed on the array substrate and located in the plurality of the first frame regions, is electrically connected to the array substrate; and An optical substrate, disposed on the sealant layer and electrically connected to the sealant layer, includes: Solar energy conversion layer; An electrode conductive layer is disposed on the solar energy conversion layer and electrically connected to the solar energy conversion layer and the frame adhesive layer; A patterned organic layer is disposed on the electrode conductive layer, exposing a portion of the electrode conductive layer; and An upper electrode layer is disposed on the patterned organic layer, located between the patterned organic layer and the sealant layer, and electrically connected to the electrode conductive layer and the sealant layer exposed by the patterned organic layer.

2. The display panel as described in claim 1, characterized in that, The surface area of ​​the patterned organic layer is between 60% and 80% of the surface area of ​​the frame adhesive layer.

3. The display panel as described in claim 1, characterized in that, The patterned organic layer includes pattern units, each pattern unit comprising multiple patterned units, the multiple patterned units being rectangular solid shapes, and the multiple patterned units being arranged side by side with each other.

4. The display panel as described in claim 3, characterized in that, The plurality of graphical units have a width, the plurality of graphical units have a first distance between them, and at least one of the plurality of graphical units has a second distance from the edge of the pattern unit.

5. The display panel as described in claim 4, characterized in that, The width of the plurality of graphical units is 80µm, the first distance is 20µm, and the second distance is 10µm.

6. The display panel as described in claim 4, characterized in that, The width of the plurality of graphical units is 160µm, the first distance is 40µm, and the second distance is 20µm.

7. The display panel as described in claim 1, characterized in that, The graphical organic layer includes graphical units, which are rectangular hollow units.

8. The display panel as described in claim 7, characterized in that, The graphical unit has a hollow central region, the width of the graphical unit is 90 μm, and the width of the central region of the graphical unit is 100 μm.

9. The display panel as claimed in claim 1, characterized in that, The frame adhesive layer located in the plurality of second frame regions is electrically connected to the array substrate but not electrically connected to the electrode conductive layer.

10. The display panel as claimed in claim 9, characterized in that, The height of the frame adhesive layer located in the plurality of first border regions is equal to the height of the frame adhesive layer located in the plurality of second border regions.

11. The display panel as claimed in claim 9, characterized in that, The width of the frame adhesive layer located in the plurality of first border regions is equal to the width of the frame adhesive layer located in the plurality of second border regions.

12. The display panel as claimed in claim 1, characterized in that, The optical substrate includes a first organic layer disposed on the electrode conductive layer, the electrode conductive layer being located in the exposed portion of the first organic layer in the plurality of first frame regions, and the vertical projection of the first organic layer on the array substrate not overlapping the vertical projection of the frame adhesive layer on the array substrate.

13. The display panel as claimed in claim 1, characterized in that, In the plurality of second frame regions, the optical substrate includes a first organic layer, which is disposed between the electrode conductive layer and the frame adhesive layer. The first organic layer located in the plurality of second frame regions shields the electrode conductive layer, and the vertical projection of the first organic layer on the array substrate overlaps with the vertical projection of the frame adhesive layer on the array substrate.

14. The display panel as claimed in claim 1, characterized in that, The conductive electrode layer is electrically connected to the positive or negative electrode layer of the solar energy conversion layer.

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